OpenCV和qt的摄像头结合

#include "QOpenCVWidget.h" // Constructor QOpenCVWidget::QOpenCVWidget(QWidget *parent) : QWidget(parent) { layout = new QVBoxLayout; imagelabel = new QLabel; QImage dummy(100,100,QImage::Format_RGB32); image = dummy; layout->addWidget(imagelabel); for (int x = 0; x < 100; x ++) { for (int y =0; y < 100; y++) { image.setPixel(x,y,qRgb(x, y, y)); } } imagelabel->setPixmap(QPixmap::fromImage(image)); setLayout(layout); } QOpenCVWidget::~QOpenCVWidget(void) { } void QOpenCVWidget::putImage(IplImage *cvimage) { int cvIndex, cvLineStart; // switch between bit depths switch (cvimage->depth) { case IPL_DEPTH_8U: switch (cvimage->nChannels) { case 3: if ( (cvimage->width != image.width()) || (cvimage->height != image.height()) ) { QImage temp(cvimage->width, cvimage->height, QImage::Format_RGB32); image = temp; } cvIndex = 0; cvLineStart = 0; for (int y = 0; y < cvimage->height; y++) { unsigned char red,green,blue; cvIndex = cvLineStart; for (int x = 0; x < cvimage->width; x++) { // DO it red = cvimage->imageData[cvIndex+2]; green = cvimage->imageData[cvIndex+1]; blue = cvimage->imageData[cvIndex+0]; image.setPixel(x,y,qRgb(red, green, blue)); cvIndex += 3; } cvLineStart += cvimage->widthStep; } break; default: printf("This number of channels is not supported\n"); break; } break; default: printf("This type of IplImage is not implemented in QOpenCVWidget\n"); break; } imagelabel->setPixmap(QPixmap::fromImage(image)); }